stringbuilder append
时间: 2023-04-21 07:03:41 浏览: 125
StringBuilder append是一个Java中的方法,它用于将字符串或其他数据类型添加到StringBuilder对象的末尾。这个方法可以用于构建长字符串,因为它比使用字符串连接符(+)更高效。例如,可以使用以下代码将两个字符串连接起来:
StringBuilder sb = new StringBuilder();
sb.append("Hello");
sb.append("World");
最终结果将是一个包含"HelloWorld"的StringBuilder对象。
相关问题
StringBuilder append
The `append()` method in `StringBuilder` is used to add a string or character to the end of the existing string. It can be overloaded to accept different types of data such as integers, floats, and other data types.
Syntax:
```
StringBuilder sb = new StringBuilder();
sb.append(string);
```
Example:
```
StringBuilder sb = new StringBuilder();
sb.append("Hello");
sb.append(" ");
sb.append("World");
System.out.println(sb.toString()); //output: Hello World
```
In the above example, we first create an empty `StringBuilder` object `sb`. We then use the `append()` method to add the strings "Hello" and "World" to the end of the `StringBuilder` object. Finally, we use the `toString()` method to convert the `StringBuilder` object to a string and print it to the console.
java stringbuilder append
Java中的StringBuilder类的append方法是用于将字符串添加到当前字符串的末尾。它返回一个对当前StringBuilder对象的引用,因此可以链式调用它来进行多次追加操作。这个方法是可变的,因此它可以有效地构建字符串,并且与String类不同,它不会创建任何中间对象。
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